Back-to-back HVDC based on Modular Multilevel Converter

Author

Chuco, B. ; Watanabe, E.H.

Author_Institution

COPPE, UFRJ, Rio de Janeiro, Brazil

fYear

2011

fDate

11-15 Sept. 2011

Firstpage

970

Lastpage

976

Abstract

This paper focuses on the dynamic performance of an back-to-back HVDC system (HVDC-MMC) using Modular Multilevel Converter (MMC). Based on the proposed Low Frequency Switching (LFS) strategy, including a voltage balancing method, the mathematical model for the HVDC-MMC is developed. Dynamic performance of HVDC-MMC, based on time-domain simulation studies in the PSCAD/EMTDC software tool is evaluated. As a results, it shown that the LFS adopted for MMC-HVDC system can respond satisfactorily during contingencies such as, sudden change on active power flow direction and balanced short circuit at the inverter system side, maintaining balanced voltage at all the dc capacitors.

Keywords

DC-DC power convertors; HVDC power convertors; PSCAD/EMTDC software tool; active power flow direction; back-to-back HVDC; balanced short circuit; low frequency switching; modular multilevel converter; voltage balancing method; Capacitors; HVDC transmission; Insulated gate bipolar transistors; Pulse width modulation; Switches; Time frequency analysis; Voltage control; HVDC Modular Multilevel Converter; Low Frequency Switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Conference (COBEP), 2011 Brazilian

Conference_Location

Praiamar

ISSN

2175-8603

Print_ISBN

978-1-4577-1644-7

Electronic_ISBN

2175-8603

Type

conf

DOI

10.1109/COBEP.2011.6085335

Filename

6085335